US2843499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transfer of xerographic images
Assignee: Xerox Corp
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Filing: 1956-09-25
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Granted: 1958-07-15
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Expires: 1976-09-25
Abstract
No abstract record available.
Inventors
- 👤 Paul G Andrus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:24
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/16; G03G15/1695; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
THE METHOD OF TRANSFERRING A DRY ELECTROSTATICALLYBOUND LOOSE POWDER PARTICLE IMAGE TO A TRANSFER MEMBER COMPRISING A GELATIN LAYER UPON A SUPPORT BASE TO FORM A QUALITY TRANSFERRED XEROGRAPHIC PRINT, SAID METHOD COMPRISING IMMERSING THE TRANSFER MEMBER IN WATER AT ROOM TEMPERATURE FOR MORE THAN 10 SECONDS, REMOVING BY SQUEEZING EXCESS WATER FROM THE TRANSFER MEMBER TO A POINT WHEREAT THE GELATIN LAYER IS CHARACTERIZED BY BEING SOFT IMPRESSIONABLE AND SUBSTANTIALLY NONTACKY, TRANSFERRING A LOOSE POWDER PARTICLE IMAGE HELD ELECTROSTATICALLY IN POSITION ON THE SURFACE OF A XEROGRAPHIC PLATE COMPRISING A PHOTOCONDUCTIVE INSULATING LAYER ADHERING TO A CONDUCTIVE BACKING MEMBER, THE PHOTOCONDUCTIVE INSULATING LAYER BEING RELEASABLE FROM THE BACKING MEMBER TO A CONVENTIONALLY ADHESIVE MATERIAL, BY PRESSING THE GELATIN LAYER OF THE TRANSFER MEMBER AGAINST THE PHOTOCONDUCTIVE INSULATING IMAGE-BEARING SURFACE USING SUFFICIENT FORCE TO THOROUGHLY IMBED THE POWDER IMAGE IN THE GELATIN LAYER WHILE THE GELATIN LAYER IS IN THE SOFT CONDITION REACHED BY REMOVING THE EXCESS WATER, REMOVING THE GELATIN LAYER AND THE POWDER IMAGE OUT OF CONTACT WITH THE PHOTOCONDUCTIVE INSULATING LAYER, AND HARDENING THE GELATIN LAYER CARRYING THE POWDER IMAGE BY DRYING.
Claim 2
Independent Claim
185 words
THE METHOD OF TRANSFERRING A DRY ELECTROSTATICALLYBOUND LOOSE POWDER PARTICLE IMAGE TO A TRANSFER MEMBER COMPRISING A GELATIN LAYER UPON A SUPPORT BASE TO FORM A QUALITY TRANSFERRED XEROGRAPHIC PRINT, SAID METHOD COMPRISING IMMERSING THE TRANSFER MEMBER IN WATER AT ROOM TEMPERATURE FOR MORE THAN 10 SECONDS, REMOVING BY SQUEEZING EXCESS WATER FROM THE TRANSFER MEMBER TO A POINT WHEREAT THE GELATIN LAYER IS CHARACTERIZED BY BEING SOFT IMPRESSIONABLE AND SUBSTANTIALLY NONTACKY, TRANSFERRING A LOOSE POWDER PARTICLE IMAGE HELD ELECTROSTATICALLY IN POSITION ON THE SURFACE OF A XEROGRAPHIC PLATE COMPRISING A PHOTOCONDUCTIVE INSULATING LAYER ADHERING TO A CONDUCTIVE BACKING MEMBER, THE PHOTOCONDUCTIVE INSULATING LAYER BEING RELEASABLE FROM THE BACKING MEMBER TO A CONVENTIONALLY ADHESIVE MATERIAL, BY PRESSING THE GELATIN LAYER OF THE TRANSFER MEMBER AGAINST THE PHOTOCONDUCTIVE INSULATING IMAGE-BEARING SURFACE USING SUFFICIENT FORCE TO THOROUGHLY IMBED THE POWDER IMAGE IN THE GELATIN LAYER WHILE THE GELATIN LAYER IS IN THE SOFT CONDITION REACHED BY REMOVING THE EXCESS WATER, REMOVING THE GELATIN LAYER AND THE POWDER IMAGE OUT OF CONTACT WITH THE PHOTOCONDUCTIVE INSULATING LAYER, AND HARDENING THE GELATIN LAYER CARRYING THE POWDER IMAGE BY DRYING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |